Hmmm interesting! Let me give my take one at a time ;)
In the old times, nobody said that chicken eggs were created, it just said the place were bountiful in the garden. So am assuming, animals were just running around at their leisure. Even before the flood, pairs of animals were let in, most of all chickens for fried eggs in the morning on the boat.
As for the immobile and unstoppable, yeah it can happen. They have happened but not ended happily ever after. Programming can still make you decide in pursuing something or not. It's for everyone to choose where it may lead.
Now, with the engagement and reward. I have seen this pattern as well as vice versa, depending on what a member decides to do. People have done engaging to members with or without the reward, some with just having the rewards with no engagement.
Others are doing both..so it goes back to each members affiliation to the platform and on how they are to their followers and to other members.
Phew!!!!